Digital guide
You are here:
Detailed content
Product Overview
60WKS-M240/26P is a vintage high-current hybrid analog/digital servo drive developed under Kollmorgen Seidel legacy product line, designed for medium-heavy load brushless servo motor applications under 240VDC rated DC bus supply. Equipped with 26A continuous high output current capacity for large frame high-torque servo motors, deployed as original factory drive unit on heavy-duty metalworking CNC machinery; production permanently discontinued, supplied exclusively as industrial spare replacement component.
Complete Electrical Technical Specifications
- DC Bus Rated Operating Voltage: 240 VDC
- Continuous Output RMS Current: 26 Arms
- Peak Overload Output Current: 78 Arms (3× overload, maximum 3-second duty cycle)
- Input Power Stage: 3-phase 172VAC isolation transformer rectified DC bus supply
- Supported Motor Compatibility: Kollmorgen Seidel large frame brushless synchronous servo motors
- Feedback Signal Support: Analog resolver, 1Vpp sine/cosine encoder
- Command Input Interface: ±10V analog velocity/torque command, external pulse position command
Built-In Functional Hardware Modules
- Hybrid analog front-end signal processing circuit with digital loop correction for high dynamic response
- High-power integrated braking IGBT module supporting external high-power regenerative resistor bank connection
- Full hardware fault protection matrix: phase short-circuit, DC bus overvoltage/undervoltage, overcurrent, heat sink thermal overload, feedback signal loss
- Opto-isolated digital input/output terminal block for machine limit switches, emergency stop, fault relay actuation
- Manual analog trim potentiometers for velocity loop proportional/integral gain on-site commissioning adjustment
- Internal high-current EMI filter to suppress mains harmonic interference for heavy-load operation
Structural & Material Construction Parameters
- Main Chassis: Thick gauge heavy-duty steel sheet metal anti-rust coated enclosure
- Heat Dissipation System: Large volume finned aluminum heat sink with integrated high-speed cooling fan
- Mounting Form Factor: Vertical heavy-duty cabinet backplate fixed installation
- Protection Class: IP20 cabinet internal installation only
- Physical Dimensions: W130 × H380 × D220mm; Total Net Weight: 7.8kg
Working Operational Principle
Three-phase AC industrial mains passes isolation transformer and full-wave rectifier circuit to generate stabilized 240VDC DC bus rail. Hybrid analog/digital control circuit executes analog velocity loop signal processing with digital current loop correction, driving high-current IGBT power stage to output three-phase modulated AC power for large frame brushless servo motors. Resolver or sine encoder transmits real-time rotor position feedback to analog signal front-end for closed-loop velocity regulation; external ±10V analog command signal from machine controller sets target motor rotational velocity and torque output limit. Built-in fan forced heat sink dissipates high power loss heat generated under 26A continuous full-load operation.
Product Key Advantages
- 26A continuous high current capacity supporting large frame high-torque servo motor heavy-load operation
- Hybrid analog/digital control architecture delivers ultra-fast dynamic response for high-inertia mechanical load axes
- Integrated high-power braking circuit for heavy deceleration regenerative energy dissipation without external high-capacity resistor hardware
- Robust heavy-duty steel chassis and forced fan cooling system designed for 24-hour continuous production shift operation
- Full CE safety certification for legacy heavy industrial CNC machine spare part cross-region replacement
Applicable Industrial Equipment Fields
Vintage heavy-duty vertical milling CNC machines, metal plasma cutting large gantry equipment, hydraulic press auxiliary servo positioning axes, heavy material rolling machinery, large format woodworking planer CNC equipment, factory legacy servo system retrofit spare part replacement projects.
Mandatory Installation Compliance Standards
- Vertical cabinet mounting only; minimum vertical top/bottom heat clearance ≥60mm, horizontal side gap ≥100mm
- Dual forced ventilation fans mandatory inside electrical cabinet housing multiple 60WKS-M240/26P drive units
- Operating ambient temperature range 0°C to 38°C; linear power derate 4% per °C above threshold, absolute maximum operating temperature 50°C
- All motor power and feedback cables must utilize heavy-duty double-shielded high-current wiring with full EMC grounding termination
- External regenerative braking resistor bank mandatory for high-cycle rapid deceleration heavy-load applications to avoid DC bus overvoltage faults
- Cabinet air filter installed at cooling fan intake to prevent metal dust accumulation on internal heat sink fins
Critical Usage Limitations & Maintenance Protocols
- Original production discontinued since 2008; no factory firmware upgrade, replacement control board or spare internal power component supply
- Analog-only command interface; no modern industrial Ethernet bus communication compatibility
- Integrated cooling fan requires annual bearing lubrication or full fan replacement to prevent overheat shutdown failure
- Disconnect three-phase main AC power and wait minimum 15 minutes for high-capacity DC bus capacitors complete discharge before chassis maintenance access
- Monthly heat sink fin dust cleaning via high-pressure dry compressed air to eliminate airflow obstruction
- Power cycle interval minimum 60 seconds between power-off and power-on operations to avoid rectifier circuit inrush current damage
